Mobile terminal

ABSTRACT

A mobile terminal in which an imaging unit is provided on a front surface side and a display unit and a sensor are provided on a back surface side includes a signal processing unit which, from a signal output by the imaging unit, generates information to be displayed by the display unit, and a control unit into which a signal from the sensor is input and which controls the signal processing unit. A display state of the display unit based on the control performed by the control unit includes a first display state for display in a first display region if no detection signal is being input from the sensor, and a second display state for display in a second display region if a detection signal is being input from the sensor.

This application is a Continuation of U.S. application Ser. No.17/135,958, filed Dec. 28, 2020, which is a Continuation of U.S.application Ser. No. 16/311,132, filed Dec. 18, 2018, now U.S. Pat. No.10,911,661, issued Feb. 2, 2021, which in turn claims the benefit ofJapanese Application No. 2016-124538, filed Jun. 23, 2016, thedisclosures of which are incorporated by reference herein.

TECHNICAL FIELD

The present invention relates to a mobile terminal having an imagingunit and a display.

BACKGROUND ART

A mobile terminal of the related art, having an imaging unit (a camera)generally has a communication function, so that the mobile terminal iscapable of transmitting images photographed by the camera to the outsidethrough a telephone line or a network and is easy to share the imagesamong users. Such a mobile terminal usually has a display such as aliquid crystal on a back surface, and a user holds the terminal whenperforming photographing by the camera, and can perform photographingwhile monitoring the images displayed on the display from a certaindistance away during the photographing.

For example, Patent Documents 1 and 2 disclose such mobile terminals. Onthe other hand, in addition to such a display, an imaging apparatus suchas a digital camera is an apparatus having an electronic viewfinder suchthat a user can observe the photographed images by looking into theelectronic viewfinder.

For example, Patent Document 3 discloses the electronic viewfinder.

CITATION LIST Patent Document

Patent Document 1: JP 2001-136499 A

Patent Document 2: JP 2006-157171 A

Patent Document 3: JP 2002-10112 A

SUMMARY OF THE INVENTION Problems to be Solved by the Invention

However, the mobile terminals disclosed in Patent Documents 1 and 2 havea problem that external light is incident on a display in brightenvironments such as outdoors, making it difficult for the images on thedisplay to be viewed. Further, the electronic viewfinder disclosed inPatent Document 3 is easy to shield light and easy to monitor imageseven in bright environments such as outdoors, whereas apparatuses havingthe electronic viewfinder has a problem that the apparatuses aredifficult to be downsized and thin and in addition to the display, costof electronic components of the electronic viewfinder is increased.

Accordingly, an object of the present invention is to control thedisplay of a mobile terminal such that a viewer including a finderportion can be used for the mobile terminal.

Solutions to Problems

In order to solve the problems, the present invention adopts, forexample, the configurations described in the claims. An example thereofis a mobile terminal in which an imaging unit is provided on a frontsurface side and a display unit and a sensor are provided on a backsurface side, including: a signal processing unit which, from a signaloutput by the imaging unit, generates information to be displayed by thedisplay unit; and a control unit into which a signal from the sensor isinput and which controls the signal processing unit,

in which a display state of the display unit based on the controlperformed by the control unit includes a first display state for displayin a first display region if no detection signal is being input from thesensor, and a second display state for display in a second displayregion if a detection signal is being input from the sensor.

EFFECTS OF THE INVENTION

According to the present invention, it is possible to perform displaysuitable for a viewer including a finder portion, so that the viewer maybe used for the mobile terminal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram illustrating an example of a configuration ofa mobile terminal of Embodiment 1.

FIG. 2 is a diagram illustrating an example of a structure of a display.

FIG. 3 is a diagram illustrating an example of an external appearance ofthe mobile terminal of Embodiment 1.

FIG. 4 is a diagram illustrating an example of a viewer of Embodiment 1.

FIG. 5 is a diagram illustrating an example of a structure of a finderportion of the viewer.

FIG. 6A is a diagram illustrating an example of a display in a casewhere the viewer is not mounted.

FIG. 6B is a diagram illustrating an example of a display in a casewhere the viewer of Embodiment 1 is mounted.

FIG. 7A is a diagram illustrating an example of a focus setting regionframe in a case where the viewer is not mounted.

FIG. 7B is a diagram illustrating an example of a focus setting regionframe in a case where the viewer of Embodiment 1 is mounted.

FIG. 8 is a diagram illustrating another example of the viewer ofEmbodiment 1.

FIG. 9 is a block diagram illustrating an example of a configuration ofa mobile terminal of Embodiment 2.

FIG. 10 is a diagram illustrating an example of an external appearanceof the mobile terminal of Embodiment 2.

FIG. 11 is a diagram illustrating an example of a viewer of Embodiment2.

FIG. 12A is a diagram illustrating an example of a display of aphotographing mode of Embodiment 2.

FIG. 12B is a diagram illustrating an example of a display in areproducing mode of Embodiment 2.

MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described withreference to the drawings.

Embodiment 1

FIG. 1 is a block diagram illustrating an example of a configuration ofa mobile terminal 1 according to Embodiment 1. A lens unit 2 a and animaging unit 3 a are a rear camera disposed on the front surface of themobile terminal 1 and are generally used for ordinary photographing suchas landscape. A lens unit 2 b and an imaging unit 3 b are a front cameradisposed on the back surface of the mobile terminal 1, and are used forso-called self-photographing.

Each of the lens units 2 a and 2 b is configured with a plurality oflenses including a focus lens, and a control circuit 6 controls aposition of the focus lens to perform a focusing operation. The imagingunits 3 a and 3 b include an imaging sensor configured with a CMOS, aCCD, or the like. Photoelectric conversion elements as an imaging sensorare two-dimensionally disposed on an imaging surface of the imagingunits 3 a and 3 b, and an optical image of a subject, which is inputthrough the lens units 2 a and 2 b and formed on the imaging surface, isphotoelectrically converted into an imaging signal.

The imaging units 3 a and 3 b include an AD conversion circuit thatconverts an analog signal into a digital signal, and output a digitizedimaging signal. Further, the imaging units 3 a and 3 b may include animaging sensor in which pixels for a phase difference AF (autofocus) aredisposed, so that it is intended to speed up the AF. The imaging units 3a and 3 b may include a memory, so that an interval until the nextimaging is shortened.

Incidentally, in a case where the imaging units 3 a and 3 b do notinclude the AD conversion circuit, the AD conversion circuit may beprovided outside the imaging units 3 a and 3 b. The control circuit 6controls the imaging units 3 a and 3 b, and the lens units 2 a and 2 baccording to an operation mode of the mobile terminal 1, in addition tothe focusing operation.

An interface circuit 4 outputs either or both of input signals from theimaging units 3 a and 3 b to an image/audio signal processing circuit 5according to the operation mode of the mobile terminal 1. The controlcircuit 6 also controls this operation mode. The image/audio signalprocessing circuit 5 performs various image signal processing such asfiltering, amplification according to sensitivity setting, white balancecorrection, and the like on the input signal from the interface circuit4.

The image/audio signal processing circuit 5 generates moving image dataor still image data as image data for display or image data forrecording from the signal subjected to image signal processing,according to the operation mode. Here, the image data for display may bescaled up or down as an image. The image data for display is output to adisplay 8, and the image data for recording is output to anencoding/decoding circuit 15.

The image/audio signal processing circuit 5 may input the encoded ordecoded image data from the encoding/decoding circuit 15 to be output toa recording/reproducing circuit 10, or may generate the image data fordisplay to be output to the display 8. Under the control of the controlcircuit 6, the image/audio signal processing circuit 5 may generateimage data of texts and graphics to be output to the display 8, or mayadjust the brightness of the display 8.

Further, in addition to a circuit for performing image signalprocessing, the image/audio signal processing circuit 5 also includes acircuit for performing audio signal processing, and performspredetermined audio signal processing such as encoding on an inputsignal from a microphone 34. Then, in a case where an encoded audiosignal is input, the audio signal is decoded to be output to a speaker32. The microphone 34 and the speaker 32 may be used for speechcommunication, and the audio signal may be transmitted to and receivedfrom a telephone line by a wireless communication unit 14 through theimage/audio signal processing circuit 5 and the control circuit 6.

Incidentally, the image/audio signal processing circuit 5 may be an LSIintegrated into one chip with another circuit, or may be one independentLSI. Then, there may be provided a circuit including two systems ofcircuits for processing the imaging units 3 a and 3 b depending on theperformance of the imaging units 3 a and 3 b, and capable ofsimultaneously performing two systems of signal processing. Further, amemory 12 that is a DRAM, a flash memory, or the like may be used as atemporary buffer memory.

The encoding/decoding circuit 15 encodes moving image data or stillimage data, or decodes the encoded data. Instead of the image/audiosignal processing circuit 5, an encoding/decoding circuit 15 may encodeor decode the audio signal. The recording/reproducing circuit 10 writesdata input from the image/audio signal processing circuit 5 into arecording medium 11, or reads out the data stored in the recordingmedium 11 to be output to the image/audio signal processing circuit 5.Incidentally, data to be read from or written to may be any encodeddata.

The control circuit 6 inputs information from each unit of a posturedetection unit 7, an operation input unit 9, a position informationinput unit 13, and a proximity sensor 31, and controls each unit of thelens units 2 a and 2 b, the imaging units 3 a and 3 b, and the interfacecircuit 4 to input and output information with the image/audio signalprocessing circuit 5 and the wireless communication unit 14. Further,the control circuit 6 may control the image/audio signal processingcircuit 5 and the wireless communication unit 14, or may control thedisplay 8, the encoding/decoding circuit 15, and therecording/reproducing circuit 10, through the image/audio signalprocessing circuit 5.

Further, the control circuit 6 may directly control the display 8, theencoding/decoding circuit 15, and the recording/reproducing circuit 10by using a control line (not illustrated). Incidentally, the controlcircuit 6 may be a processor, or may execute a program stored in amemory (not illustrated) or a memory incorporated in the processor.

The wireless communication unit 14 is a circuit that communicates withthe Internet or the like by wireless communication. Wirelesscommunication may be a telephone line, a wireless LAN, or the like. Theposition information input unit 13 is a circuit that acquires theposition information of the mobile terminal 1 by a GPS or wirelesscommunication to output the acquired position information to the controlcircuit 6. The posture detection unit 7 is a circuit that detectsgravity by an acceleration sensor or detects rotation by an angularvelocity sensor to output the detected information to the controlcircuit 6.

The proximity sensor 31 is a sensor that detects an object approachingthe mobile terminal 1 and is a sensor that mainly detects a face to bein close to the mobile terminal 1 for speech communication. Since theproximity sensor 31 of the present embodiment also detects approachother than the approach of the face, it is preferable that the proximitysensor 31 is an infrared type proximity sensor or the like for detectingthe approach of an object other than a human body.

The operation input unit 9 receives an operation input from a user.Specifically, as described later, the operation input unit includes atouch panel, a power button, and a shutter. However, the operation inputunit is not limited thereto and may include various dedicated buttons.The display 8 is, for example, a display panel such as a liquid crystalpanel or an organic EL panel. It is preferable that the display 8 andthe touch panel of the operation input unit 9 are integrated. In thefollowing description, the touch panel of the operation input unit 9 isalso referred to as the display 8 unless otherwise mentioned.

Incidentally, the mobile terminal 1 may be a general smartphone, atablet, or the like.

The operation mode of the mobile terminal 1 includes at least aphotographing mode and a reproducing mode. First, operations in thephotographing mode will be described. The control circuit 6 detects anactivation instruction of the photographing mode by an operation on theoperation input unit 9 (touch panel) and the like, and performs controlaccording to the photographing mode. The photographing mode furtherincludes a still image photographing mode and a moving imagephotographing mode.

In either case of still image photographing or moving imagephotographing, the imaging units 3 a and 3 b output imaging signals atpredetermined intervals, and the imaging signals are subjected topredetermined image signal processing in the image/audio signalprocessing circuit 5 through the interface circuit 4, so that the imagedata for display is generated. The image data for display is displayedon the display 8 in real time.

At this time, depending on which of the imaging unit 3 a and the imagingunit 3 b is used, the AF or a diaphragm value, and the like, the controlcircuit 6 controls the lens units 2 a and 2 b, the imaging units 3 a and3 b, the interface circuit 4, the image/audio signal processing circuit5, and the like. Incidentally, in a case where it is set to detect twostates of a half depression and a full depression on the depression ofthe shutter, once the state of the half depression is detected, thecontrol circuit 6 may perform control of the AF.

In the still image photographing mode, once the depression of theshutter or the full depression is detected, the control circuit 6controls each unit according to the photographing conditions such as ashutter speed. The imaging signals of a still image imaged by theimaging units 3 a and 3 b are subjected to predetermined still imagesignal processing by the image/audio signal processing circuit 5, andare then encoded by the encoding/decoding circuit 15.

Here, the memory 12 may be used as a buffer memory when still imagesignal processing and encoding are performed. Further, the encoding maybe, for example, any encoding into JPEG data, or encoding of MPEG datainto still images. The encoded still image data is output to therecording/reproducing circuit 10 by the image/audio signal processingcircuit 5, and is recorded on the recording medium 11 by therecording/reproducing circuit 10. Incidentally, without the use of theencoding/decoding circuit 15, recoding may be performed in ahigh-quality RAW format.

In the moving image photographing mode, once the depression of theshutter or the full depression is detected, the control circuit 6controls each unit according to the photographing conditions. In thecase of the moving image photographing mode, even though the depressionof the shutter is released, the control circuit 6 continues control ofthe photographing. The imaging signals of a moving image imaged by theimaging units 3 a and 3 b are subjected to predetermined moving imagesignal processing by the image/audio signal processing circuit 5, andare then encoded by the encoding/decoding circuit 15.

The encoding may be, for example, any encoding into MPEG data such asH.264 or H.265, or encoding into other moving image formats. The encodedmoving image data is output to the recording/reproducing circuit 10 bythe image/audio signal processing circuit 5 and is recorded on therecording medium 11 by the recording/reproducing circuit 10.

Once the depression of the shutter during photographing of the movingimage is detected again, the control circuit 6 terminates control of thephotographing. Incidentally, the image/audio signal processing circuit 5generates image data for display during photographing and also afterphotographing of the moving image, and the image data for display isdisplayed on the display 8 in real time.

Next, operations in the reproducing mode will be described.

The control circuit 6 detects an activation instruction of thereproducing mode on an operation of the operation input unit 9 (touchpanel) or the like, and performs control according to the reproducingmode. The recording/reproducing circuit 10 reads out designated datafrom the data recorded on the recording medium 11, the read-out data isdecoded by the encoding/decoding circuit 15 through the image/audiosignal processing circuit 5, and the decoded data is output to theimage/audio signal processing circuit 5. The image/audio signalprocessing circuit 5 generates image data for display from the decodeddata, and the image data for display is displayed on the display 8.

FIG. 2 is a diagram illustrating an example of a cross-sectionalstructure of the display 8 including a liquid crystal panel 22 and atouch panel 21. The display 8 is formed by disposing the touch panel 21on an upper surface of the liquid crystal panel 22 to integrate them,disposing a protective cover 20 such as glass on the upper surface ofthe touch panel 21, and disposing a backlight 23 on a lower surface ofthe liquid crystal panel 22.

The touch panel 21 uses, for example, an electrostatic capacitance type,and transparent electrodes are disposed in a two-dimensional orthogonalmanner. Once a human finger or a touch pen is in contact with orapproaches a display screen of the display 8, electrostatic capacitancebetween the finger or the touch pen and the transparent electrodes ischanged, so that a position in the horizontal and vertical directions onthe contacted screen is detected. Incidentally, display and operationsof the display 8 including the touch panel 21 will be described later.

In this structure, since the electrostatic capacitance is detectedthrough the protective cover 20, the touch panel 21 is disposed in closecontact with the protective cover 20 to obtain high detection accuracy.Further, since a surface of the protective cover 20 is subjected togloss finishing, high visibility of the display image of the liquidcrystal panel 22 is obtained and a slip of the finger and the touch penis improved. However, once the surface of the protective cover 20 issubjected to glossy finishing, a reflection amount of light from theoutside is increased.

The backlight 23 emits illumination light from the back surface of theliquid crystal panel 22 to display an image. In a case where it is notnecessary to display the image, the backlight 23 is controlled to beturned off, in order to reduce power consumption. The backlight 23 maybe turned off over the whole of the display 8, and the backlight 23 isdivided into a plurality of portions to be controlled so that a portionof the display 8 may be turned off.

Incidentally, instead of the liquid crystal panel 22 and the backlight23, a panel such as an organic EL may be used. In the display panelusing a light-emitting element such as an organic EL, the backlight isunnecessary. Further, in addition to the electrostatic capacitance type,the touch panel 21 may use a pressure sensitive type or the like.

FIG. 3 is a diagram illustrating an example of the external appearanceof the mobile terminal 1, FIG. 3(a) is a diagram of the mobile terminal1 as seen from a back surface side, FIG. 3(b) is a diagram of the mobileterminal 1 as seen from a side surface side, and FIG. 3(c) is a diagramof the mobile terminal 1 as seen from a front surface side. The display8 integrated with the touch panel 21 is disposed on the back surface ofthe mobile terminal 1.

As illustrated in FIGS. 3(a) and 3(c), the lens unit 2 a of the rearcamera is disposed on the front surface, and the lens unit 2 b of thefront camera is disposed on the back surface. FIGS. 3(a) and 3(c)illustrate that the lens units 2 a and 2 b is fixed on the front surfaceand the back surface, respectively, but may be replaced with a lens ofan attachable or detachable type having a different focal length. Apower switch 33 is a switch operated when activating and terminating themobile terminal 1, and may also serve as a switch for returning to apower saving mode in the mobile terminal 1 having a power saving mode.

Since the speaker 32 and the microphone 34 are for speech communication,for example, the speaker and the microphone are disposed to be in closeto the ears and the mouth of a caller in speech communication. Theproximity sensor 31 is disposed to be in close to the speaker 32, forexample, in order to detect the approach of a face in speechcommunication, and the infrared type proximity sensor has a lightemitting portion and a light receiving portion for near infrared light.The proximity sensor 31 is disposed on the same surface as that of thedisplay 8, that is, on the back surface, in order to detect that theviewer is mounted as described later. The speaker 32 and the microphone34 are also disposed on the back surface.

A shutter 35 is a switch for instructing to perform photographingthrough the lens unit 2 a and the shutter 35 may coexist with a shutterexecuted by touching a portion of the touch panel 21, or may beeliminated. The example of FIG. 3(b) is an example of the disposition ofthe power switch 33 and the shutter 35, without limiting to thisdisposition.

FIG. 4 is a diagram illustrating an example of a viewer 40 mounted onthe mobile terminal 1. The viewer 40 has a structure in which the vieweris attachable to or detachable from the back surface of the mobileterminal 1. FIG. 4(a) is a diagram of the viewer 40 as seen from a backsurface side, FIG. 4(b) is a diagram of the viewer 40 as seen from aside surface side, and FIG. 4(c) is a diagram of the viewer 40 as seenfrom a front surface side. Here, the back surface, the side surface, andthe front surface are the same surfaces as those of the mobile terminal1 illustrated in FIG. 3, but are not surfaces based on the structure ofthe viewer 40.

The viewer 40 includes a finder portion 42 a. As illustrated in FIGS.4(a) and 4(b), the finder portion 42 a has a rectangular tube shape,that is, a shape in which four side surfaces are surrounded bysubstantially rectangular light shielding plates to shield light fromthe side surfaces. As illustrated in FIGS. 4(a) and 4(c), an openingportion 41 of the finder portion 42 a is an opening portion throughwhich light is passed from the front surface side to the back surfaceside of the viewer 40, and the structure of the opening portion 41 willbe described later with reference to FIG. 5. A cavity portion 43 is acavity through which light, a human finger or a touch pen is passedbetween the front surface side and the back surface side of the viewer40.

The whole of the viewer 40 has a shape in which the viewer is mountedcovering portions of the back surface and the side surface of the mobileterminal 1, and is formed of a material such as colored polycarbonate asa light shielding material. The viewer 40 and the mobile terminal 1 mayhave a shape in which the viewer and the mobile terminal are pinchedbetween fingers to maintain a mounted state, and each of the viewer 40and the mobile terminal 1 may have a concave portion and convex portion(not illustrated) so that the concave portion is fitted to the convexportion to maintain a mounted state.

Further, the viewer 40 has a shape in which the proximity sensor 31detects the viewer in a state where the viewer 40 is mounted to themobile terminal 1. Therefore, at the time of mounting, the openingportion 41 and the cavity portion 43 are not located at positions facingthe proximity sensor 31, and a portion of the viewer 40 excluding theopening portion 41 and the cavity portion 43 is located facing theproximity sensor 31.

FIG. 5 is a cross-sectional view illustrating an example of the finderportion 42 a. A cover glass 50 and lens 51 are fitted to the openingportion 41 of the finder portion 42 a, and the side surfaces of thefinder portion 42 a serve as supporting members of the cover glass andlens. In a case where the display 8 is directly viewed without theviewer 40, it is performed to normally view the display 8 at a distanceof about 30cm or more from the display 8, whereas in a case where theviewer 40 is used, it is performed to view the display 8 in a state oflooking into the finder portion 42 a, so that the image displayed on thedisplay 8 is enlarged by the lens 51 to adjust focus on the image.

The cover glass 50 protects the lens 51. It is preferable that thefinder portion 42 a extends from an eyepiece position to the cover glass50, and it is preferable to have a shape in which the cover glass 50 isshielded from external light by the side surfaces of the finder portion42 a and a face of a person looking into the finder portion.

FIG. 6A is a diagram illustrating an example of a display in a casewhere the viewer 40 is not mounted, and FIG. 6B is a diagramillustrating an example of a display in a case where the viewer 40 ismounted. The display on the display 8 is changed depending on whether ornot the viewer 40 is mounted, that is, whether or not the viewer 40 isused. In the case of the viewer 40 being not used of FIG. 6A, it isperformed to directly view the display 8.

In FIG. 6A, a subject 67 a is a display of a subject imaged by theimaging unit 3 a. An imaging region 66 a is preferably a display withina range imaged by the imaging unit 3 a, but may be a display within arange of a portion obtained by clipping the periphery. Further, thedisplay of the subject 67 a and the imaging region 66 a may be reducedand displayed according to a ratio between the number of pixels of theimaging units 3 a and 3 b and the number of pixels of the display 8.

Setting buttons 60 to 64 are a display of various setting buttons, and ashutter button 65 is a display of a button corresponding to a shutter.The setting button 60 is a button for switching between the front cameraand the rear camera, the setting button 61 is a button for changing anISO sensitivity, the setting button 62 is a button for changing adiaphragm value, the setting button 63 is a button for changing ashutter speed, and the setting button 64 is a button for setting aflash.

These setting buttons 60 to 64, which are operation menus for settingthe camera, are displayed on the display 8. Once it is detected that aposition corresponding to a display is touched on the touch panel 21 ofthe operation input unit 9, the setting is changed by the processing ofthe control circuit 6. For example, each time the setting button 60 istouched, the rear camera and the front camera are switched.

Further, in a case where the setting button 61 is touched, a selectableISO sensitivity is displayed by horizontal scrolling, and in a casewhere a selection is made by touch, the ISO sensitivity is changed. Thediaphragm value of the setting button 62 and the shutter speed of thesetting button 63 also operate in the same manner as the setting button61. Each time the setting button 64 is touched, the setting button 64 isset to ON (forced light emission), OFF (light emission prohibition), orautomatic light emission (light emission control according tobrightness).

Incidentally, these setting buttons 60 to 64 are examples of operationmenus, and menus for changing an optional setting and setting buttonssuch as changing a mode to a photographing mode including moving imagephotographing, or a reproducing mode, a focusing mode, and white balancemay be displayed. The shutter button 65 is the same operation as theshutter 35 and may be combined with the shutter 35.

Further, when the image imaged by the imaging unit 3 b as the frontcamera is displayed on the display 8, the image is displayed as a mirrorimage, and the other images are normally displayed as normal images.Then, the display and operations of FIG. 6A may be a general display andoperations of the smartphone.

In the display of FIG. 6B, the same displays as those in FIG. 6A aredenoted by the same reference numerals, and the descriptions thereofwill not be repeated. A region 68 is a region corresponding to thecavity portion 43, and even in a state where the viewer 40 is mounted,the region 68 can be viewed directly and can be touched through thecavity portion 43. The display of the setting buttons 60 to 64 and theshutter button 65 in FIG. 6B is illustrated as an example of the samedisplays as those in FIG. 6A, but may be reduced and displayed, ascompared with the display of FIG. 6A, to fit in the region 68.

In a case where the viewer 40 is mounted, the setting button 60 forswitching between the rear camera and the front camera may not bedisplayed using only the rear camera, or the setting button 60 may begrayed out not to be selectable. Further, in a case where it is detectedthat the viewer 40 is mounted, the setting buttons 60 to 64 may bechanged to different operation menus.

A subject 67 b and an imaging region 66 b correspond to the subject 67 aand the imaging region 66 a, respectively, and the same image data isused and displayed as an image display by one operation of the shutter35 or the shutter button 65. Here, in a case where the subject 67 a andthe imaging region 66 a are displayed at equal magnification, thesubject 67 b and the imaging region 66 b are reduced and displayed, andin a case where the subject 67 a and the imaging region 66 a are reducedand displayed, the subject 67 b and the imaging region 66 b are reducedand displayed to be smaller, as compared with the reduced display of thesubject 67 a and the imaging region 66 a. This reduction is performed bythe image/audio signal processing circuit 5.

It is preferable that a size of the imaging region 66 b is large enoughto sufficiently confirm the image displayed in the imaging region 66 bfrom corner to corner, due to enlargement by the lens 51. For example, amagnification setting button is also displayed on the operation menus ofthe setting buttons 60 to 64, and a reduction magnification for thissize may be set by a touch operation. Further, a distance from thedisplay 8 to the lens 51, a distance from the lens 51 to an eye lookinginto the lens, a focal length of the lens 51, and the like are preset,and a size and resolution and the like of a screen of the display areacquired, so that the reduction magnification may be calculated.

The periphery display of the imaging region 66 b, that is, a hatchedportion of a region 69, may be displayed with a reduced brightness orblack. For this display, the liquid crystal panel 22 may be controlled,or the backlight 23 may be controlled.

The mounting of the viewer 40 is detected by the proximity sensor 31.For example, once the proximity sensor 31 detects a proximity object tobe within a range of a preset distance longer than a preset time in astate where the photographing mode is set, the control circuit 6 mayperform control of changing a display to another display illustrated inFIG. 6B. That is, the control circuit 6 may perform control of reducingthe imaging region 66 b including the subject 67 b and displaying theregion 69 with a reduced display brightness.

Further, the removal of the viewer 40 is also detected by the proximitysensor 31. For example, once the proximity sensor 31 does not detect aproximity object to be within a range of a preset distance longer than apreset time in a state where the photographing mode is set, the controlcircuit 6 may perform control of changing a display to the displayillustrated in FIG. 6A. Incidentally, the setting button for switchingis also displayed on the operation menus of the setting buttons 60 to64, and may control switching between the display illustrated in FIG. 6Aand the display illustrated in FIG. 6B by a touch operation.

When a still image or a moving image is photographed, there is a casewhere bright surroundings make it difficult for the screen of thedisplay 8 to be viewed. In such a case, since the viewer 40 is mountedto improve a light shielding property, it is easy to confirm the imageof the subject 67 b even in the bright surroundings.

FIG. 7A is a diagram illustrating an example of a display including afocus setting region frame 70 a in a case where the viewer 40 is notmounted. In the display of FIG. 7A, the same displays as those in FIG.6A are denoted by the same reference numerals, and the descriptionsthereof will not be repeated. In the display illustrated in FIG. 6A, forexample, once the touch panel 21 detects that an optional position inthe display of the imaging region 66 a is touched, the control circuit 6displays the focus setting region frame 70 a by focusing on a distanceto an imaging target corresponding to the touched position.

FIG. 7B is a diagram illustrating an example of a display including afocus setting region frame 70 b in a case where the viewer 40 ismounted. In the display of FIG. 7B, the same displays as those in FIG.6B are denoted by the same reference numerals, and the descriptionsthereof will not be repeated. A touch pad region 71 is touched throughthe region 68 corresponding to the cavity portion 43 and the controlcircuit 6 performs control of moving a position of the focus settingregion frame 70 b in the imaging region 66 b according to a touchedposition in the region 68.

In this way, it is possible to move the position of the focus settingregion frame 70 b in the display of the imaging region 66 b, even thoughthe cover glass 50 cannot be touched due to the mounting of the viewer40. Further, icons and the like corresponding to the setting buttons 60to 64 illustrated in FIG. 7A are displayed in the display of the imagingregion 66 b, and the control circuit 6 may perform control such thaticons and the like are selectable according to the position of the focussetting region frame 70 b.

FIG. 8 is a diagram illustrating another example of the viewer 40. FIG.8(a) is a diagram of the viewer 40 as seen from the back surface side,FIG. 8(b) is a diagram of the viewer 40 as seen from the side surfaceside, and FIG. 8(c) is a diagram of the viewer 40 as seen from the frontsurface side. In FIG. 8, the same structures as those in FIG. 4 aredenoted by the same reference numerals, and the descriptions thereofwill not be repeated. FIG. 8 illustrates a different shape of the finderportion 42 b, as compared with FIG. 4.

In the example illustrated in FIG. 4, each of the side surfaces of thefinder portion 42 a is substantially rectangular, but in the exampleillustrated in FIG. 8, each of the side surfaces of the finder portion42 b is substantially trapezoidal. That is, as the opening portion 41approaches the display 8, the opening portion becomes wider. In thisway, in the case of looking into the finder portion 42 b, an inside ofthe finder portion 42 b, that is, a visible region of an inside surfaceon an opening portion 41 side is reduced, and the display regions of theimaging region 66 b illustrated in FIGS. 6B and 7B are widened, so thatthere are a case where the number of pixels in the display region iseasy to be increased. Further, since the side surface of the finderportion 42 b is substantially trapezoidal, a physical structuralstrength also is enhanced.

As described above, according to the present embodiment, in the mobileterminal 1 which has the display 8 such as a liquid crystal panel butdoes not have the electronic viewfinder, the same functions and effectsas the viewfinder are obtained only by mounting the viewer 40. Here, theviewer 40 does not include display components unlike the electronicviewfinder, so that a simple structure and a low cost are obtained.

Further, since it is possible to eliminate, through image processing ofthe mobile terminal 1, a portion in which the display of the imagingregion 66 a cannot be confirmed resulting from the mounting of theviewer 40, the viewer 40 can be substantially used. Then, since it ispossible to automatically switch a display when the viewer 40 is mountedor not mounted, it is possible to provide a user-friendly mobileterminal. Further, even though the viewer 40 is mounted, it is possibleto move a manual focus setting region frame.

Embodiment 2

In Embodiment 1, the example of one rear camera has been described, butin Embodiment 2, an example of two rear cameras will be described. FIG.9 is a block diagram illustrating an example of the configuration of themobile terminal 1 of Embodiment 2. In FIG. 9, the same structures asthose in FIG. 1 are denoted by the same reference numerals and thedescriptions thereof will not be repeated. In FIG. 1, two lens units 2 aand 2 b corresponding to the front camera and the rear camera, and twoimaging units 3 a and 3 b are provided, whereas in the example of FIG.9, a lens unit 2 c and an imaging unit 3 c are further provided.

The lens unit 2 c and the imaging unit 3 c are combined with the lensunit 2 a and the imaging unit 3 a, so that the front camera can copewith stereo imaging or the like. For example, the imaging unit 3 a andthe imaging unit 3 b are controlled to perform imaging at the sametiming, and the interface circuit 4 outputs both input signals from theimaging units 3 a and 3 c to the image/audio signal processing circuit5. Further, the image/audio signal processing circuit 5 generates imagedata for display based on both input signals and outputs the image datato the display 8. This display will be described later.

FIG. 10 is a diagram illustrating an example of the external appearanceof the mobile terminal 1 of Embodiment 2. FIG. 10(a) is a diagram of themobile terminal 1 as seen from the back surface side, FIG. 10(b) is adiagram of the mobile terminal 1 as seen from the side surface side, andFIG. 10(c) is a diagram of the mobile terminal 1 as seen from the frontsurface side. In FIG. 10, the same structures as those in FIG. 3 aredenoted by the same reference numerals, and the descriptions thereofwill not be repeated. In FIG. 3, the lens unit 2 a of the rear camera isprovided, but in the example of FIG. 10, the lens unit 2 a and the lensunit 2 c of the rear camera are provided.

The lens unit 2 a and the lens unit 2 c are disposed at a predeterminedinterval in a longitudinal direction on the front surface of the mobileterminal 1. Incidentally, disposition in the longitudinal direction isfor performing photographing by using the mobile terminal 1 sideways.Although disposition is not limited thereto, it is preferable to disposethe lens units side by side in a long side direction of the display 8.

FIG. 11 is a diagram illustrating an example of a viewer 80 ofEmbodiment 2. The viewer 40 has a structure in which the viewer isattachable to or detachable from the back surface of the mobile terminal1. Incidentally, it is preferable that the viewer is mounted on themobile terminal 1 illustrated in FIGS. 9 and 10 of the presentembodiment, and the viewer is mounted on the mobile terminal 1illustrated in FIGS. 1 and 3 of Embodiment 1, so that the viewer may beused for reproducing and displaying a 3D image.

The viewer 80, which is mounted on the mobile terminal 1 illustrated inFIGS. 9 and 10 of the present embodiment, is used for 3D photographingby which images corresponding to a right eye and a left eye aresimultaneously photographed by the two imaging units of the imaging unit3 a and the imaging unit 3 c. Further, in reproducing, this viewer 80 isused for viewing 3D images. FIG. 11(a) is a diagram of the viewer 80 asseen from the back surface side, FIG. 11(b) is a diagram of the viewer80 as seen from the side surface side, and FIG. 11(c) is a diagram ofthe viewer 80 as seen from the front surface side.

As illustrated in FIGS. 11(a) and 11(b), each of the finder portions 82a and 82 c has a rectangular tube shape, that is, a shape in which fourside surfaces are surrounded by substantially rectangular lightshielding plates to shield light from the side surfaces. Further, eachof opening portions 81 a and 81 c of the finder portions 82 a and 82 cis an opening portion through which light is passed from the frontsurface side to the back surface side of the viewer 80. A cavity portion83 is a cavity through which light, a human finger or a touch pen ispassed between the front surface side and the back surface side of theviewer 80.

The finder portion 82 a and the finder portion 82 c are disposed at apredetermined interval in the longitudinal direction on the back surfaceof the viewer 80. This corresponds to the disposition of the lens units2 a and 2 c illustrated in FIG. 10(c), and when photographing isperformed by using the mobile terminal 1 sideways, each of the finderportion 82 a and the finder portion 82 c is disposed to be viewed by aleft eye and a right eye. Incidentally, in order to increase area of theopening portions 81 a and 81 c, it is preferable to dispose the finderportions side by side in the long side direction of the display 8. Thestructure of each of the finder portions 82 a and 82 c is the same asdescribed with reference to FIG. 5.

In FIGS. 11(a) and 11(c), there is illustrated an example in which, whenphotographing is performed by using the mobile terminal 1 sideways, thecavity portion 83 is disposed at a position where the touch panel 21 iseasy to be operated by a thumb. However, the cavity portion is limitedthereto, and may be disposed anywhere as long as a position is easy tobe operated other than the finder portions 82 a and 82 c. However, theopening portions 81 a and 81 c and the cavity portion 83 are preferablydisposed such that a portion of the viewer 80 other than the openingportions 81 a and 81 c and the cavity portion 83 is detected by theproximity sensor 31 at the time of mounting.

FIG. 12A is a diagram illustrating an example of a display of thephotographing mode in a case where the viewer 80 is mounted. On thedisplay 8, imaging regions 91 a and 91 c, the setting buttons 61 to 63,and the shutter button 65 are displayed, but the setting buttons 61 to63 and the shutter button 65 are the same as described with reference toFIG. 6A. Then, the setting buttons 61 to 63 and the shutter button 65are displayed in a region 90 corresponding to the cavity portion 83.

Each of the imaging region 91 a and the imaging region 91 c is a displayof the range imaged by the imaging unit 3 a and the imaging unit 3 c.When the viewer 80 is mounted, the imaging regions are displayed atpositions where the display of the imaging region 91 a is viewed throughthe opening portion 81 a, and the display of the imaging region 91 c isviewed through the opening portion 81 c. Although a subject 94 a and asubject 94 c are the same objects, the images are imaged by the imagingunit 3 a and the imaging unit 3 c, so that the images are displayed frompositions having different angles.

Then, the image data, which has been imaged and obtained by the imagingunit 3 a, is displayed as the subject 94 a in the imaging region 91 a,so that the display of the subject 94 a is viewed through the finderportion 82 a by the left eye, and the image data, which has been imagedand obtained by the imaging unit 3 c, is displayed as the subject 94 cin the imaging region 91 c, so that the display of the subject 94 a isviewed through the finder portion 82 c by the right eye. In this way,the image data can be viewed as 3D images.

Incidentally, in a case where the viewer 80 is not mounted in thephotographing mode, the image data cannot be viewed as 3D images, sothat there may be provided a display including the imaging region 66 aillustrated in FIG. 6A, instead of two displays of the imaging region 91a and the imaging region 91 c. In order to display the imaging region 66a, image data, which has been imaged and obtained by either the imagingunit 3 a or the imaging unit 3 c, may be displayed.

The display of each of the imaging region 91 a and the imaging region 91c is smaller than the display of the imaging region 66 a and the displayof each of the subject 94 a and the subject 94 c may be reduced to besmaller than the display of the subject 67 a. The display size of theimaging region 91 a and the imaging region 91 c may be the same size.Further, the mounting of the viewer 80 may be detected by the proximitysensor 31 and the display screen may be switched.

FIG. 12B is a diagram illustrating an example of the display of thereproducing mode in a case where the viewer 80 is mounted. In thedisplay of FIG. 12B, the same displays as those in FIG. 12A are denotedby the same reference numerals, and the descriptions thereof will not berepeated. However, the setting buttons 61 to 63 may be operation menusfor reproduction. Alternatively, the setting buttons may be a display ofsetting contents at the time of photographing an image to be reproduced.A selection button 95 for a recorded image, which has been displayedinstead of the shutter button 65, is a display for input used forselecting an image to be reproduced.

The display regions 93 a and 93 c are displays of images to bereproduced, and in a case where imaging is performed in the displaystate illustrated in FIG. 12A, subjects 94 d and 94 e are displayed inthe same way as the subjects 94 a and 94 c illustrated in FIG. 12A.Further, the display regions 93 a and 93 c are displayed at the samepositions as the imaging regions 91 a and 91 c. In this way, the imagedata can be seen as 3D images in the same way as described withreference to FIG. 12A.

The imaging regions 92 a and 92 c are displays of images imaged by theimaging units 3 a and 3 c. Also, in the reproducing mode, imaging isperformed by the imaging units 3 a and 3 c, and the imaged image iscombined with a portion of the display regions 93 a and 93 c in realtime to be displayed. In a case where the viewer 80 is used at the timeof reproduction, light is shielded by the finder portions 82 a and 82 c,so that the surroundings are not viewed. However, the imaging regions 92a and 92 c are superimposed and displayed on the display regions 93 aand 93 c, so that it is possible to confirm the surrounding situationswhile viewing 3D reproduction images. This synthesis and superimpositionmay be performed by the image/audio signal processing circuit 5.

Incidentally, the display of the imaging regions 92 a and 92 c in thereproducing mode may be switched on or off by a setting button or thelike (not illustrated). Further, in the photographing mode, areproduction image may be superimposed and displayed on a portion of theimaging regions 91 a and 91 c.

Since a positional relationship between the lens units 2 a and 2 c, themobile terminal 1, and the viewer 80 mounted on the mobile terminal 1 isfixed, in the photographing mode, the viewer 80 is in a state of lookinginto a direction in which the lens units 2 a and 2 c are directed. Also,in the reproducing mode, as in this state, the display images of thedisplay regions 93 a and 93 c may be changed according to the directionin which the lens units 2 a and 2 c are directed.

Here, the direction in which the lens units 2 a and 2 c are directed isalso a direction of the viewer 80 and the mobile terminal 1, a postureof the mobile terminal 1 is detected by the posture detection unit 7,and a viewing direction of the viewer 80 mounted on the mobile terminal1 is specified. Then, for example, out of the image data obtained byimaging at a super wide angle, that is, the image data recorded in aphotographing direction, an image is cut out according to the directionin which the viewer 80 is directed, and the cut out image may bedisplayed in the display regions 93 a and 93 c.

The image data obtained by imaging at a super wide angle may be obtainedby imaging by the mobile terminal 1 with the lens units 2 a and 2 cusing super wide angle lenses, or the images obtained by imaging byother apparatuses may be taken in. Further, for example, it is possibleto reproduce image data of so-called full sky type images having a fieldangle of 360 degrees, and to view the images in 3D in a directioncorresponding to the direction in which the viewer 80 is directed whileobserving the images using the viewer 80, so that the user can enjoyimages with realistic feelings.

Incidentally, also in this case, as described with reference to FIG.12B, since the images imaged by the imaging units 3 a and 3 c aresuperimposed and displayed on the reproduction image, it is possible toconfirm the surrounding situations and to enhance safety. Further, theimages are imaged by one of the imaging unit 3 a and the imaging unit 3c of the mobile terminal 1 illustrated in FIGS. 9 and 10 of the presentembodiment, so that a display may be performed as illustrated in FIGS.6A, 6B, 7A, and 7B of Embodiment 1. The viewer 40 illustrated in FIG. 4and the viewer 80 illustrated in FIG. 11 may be selectively useddepending on whether either or both of the imaging unit 3 a and theimaging unit 3 b is used.

According to Embodiment 2, as described above, it is possible to view animaging target in 3D images in photographing of the 3D images and alsoview the 3D images in the reproduction of the 3D images by the viewer80. In particular, it is not necessary to provide two electronicviewfinders, and it is possible to use the viewer 80 with a simplestructure and at a low cost.

Incidentally, in Embodiments 1 and 2, the mobile terminal 1 includes ageneral-purpose machine such as a tablet terminal or smartphone havingan imaging unit. However, in addition to these, the present invention isalso applicable to an imaging apparatus including a dedicated machinefor mainly imaging, such as a digital camera or a video camera.

According to the present invention, a portion of the display can be usedin the same manner as the electronic viewfinder by mounting the vieweron the mobile terminal having the imaging unit. Therefore, it is easy tomonitor images even in bright outdoors. Further, the display screen maybe automatically switched between a case where the viewer is used and acase where the viewer is not used. Thereby, it is possible to provide auser-friendly mobile terminal and an imaging apparatus.

REFERENCE SIGNS LIST

-   1 Mobile terminal-   2 a, 2 b, 2 c Lens unit-   3 a, 3 b, 3 c Imaging unit-   4 Interface circuit-   8 Display-   31 Proximity sensor-   40, 80 Viewer-   42 a, 42 b, 82 a, 82 c Finder portion-   43, 83 Cavity portion

1. A mobile terminal having a first side and a second side opposite tothe first side, comprising: a first camera included on the first side ofthe mobile terminal, the first camera configured to generate first imageinformation including still image data and moving image data; a secondcamera included on the second side of the mobile terminal, the secondcamera configured to generate second image information including stillimage data and moving image data; a third camera included on the secondside of the mobile terminal, the third camera configured to generatethird image information, wherein the third camera is disposed at apredetermined interval in a longitudinal direction from the secondcamera; an encoder encoding the still image data included in the firstimage information and second image information using a first type ofcompression scheme and further encoding the moving image data includedin the second image information using a second type of compressionscheme; a recording medium recording the encoded still image data andthe encoded moving image data; a wireless communication circuit forconnecting the mobile terminal to the Internet; a GPS signal receiverfor acquiring position information of the mobile terminal; an interfacecircuit receiving the first image information from the first camera andthe second image information from the second camera; a proximity sensorgenerating proximity information; a sensor to detect rotation of themobile terminal; a touch panel; a display integrated with the touchpanel, wherein the display is configured to switch between at least afirst state and a second state based on at least the proximityinformation, the display including a first display region and a seconddisplay region different from the first display region, the seconddisplay region displaying a plurality of settings corresponding to atleast one or more of the first camera and the second camera; a signalprocessor which receives the first image information and the secondimage information via the interface circuit and generates information tobe displayed by the display based on one or more of the first imageinformation and the second image information, wherein the signalprocesser performs image signal processing on the first imageinformation or the second image information to perform white balancecorrection; a controller that receives the position information from theGPS signal receiver and controls at least the first camera, the secondcamera, the wireless communication circuit, the display, and the signalprocessor, wherein the plurality of settings include a setting buttonthat is displayed in the second display region and the touch paneldetects a touch of a position of the displayed setting button, whereinthe display displays a focus setting region frame according to a touchdetected by the touch panel in the first display region, and the mobileterminal is configured to move a display position of the focus settingregion frame based on the detection of an additional touch in the firstdisplay region, and wherein the recording medium records still imagedata included in the first image information or second image informationin a format that has not been encoded by the encoder using the firsttype of compression scheme and the second type of compression scheme. 2.The mobile terminal of claim 1, wherein the first type of compressionscheme is JPEG, the second type of compression scheme is MPEG, and theformat that has not been encoded is RAW format.
 3. The mobile terminalof claim 1, wherein the second type of compression scheme is H.264 orH.265 and the format that has not been encoded is RAW format.
 4. Themobile terminal of claim 1, wherein: the encoder encodes image dataincluded in the third image information; the interface circuit receivesthe third image information from the third camera; the signal processorreceives the third image information from the third camera via theinterface circuit and generates information to be displayed by thedisplay based on the third image information; and the controllercontrols the third camera.
 5. The mobile terminal of claim 1, furthercomprising: a first lens associated with the first camera; a second lensassociated with the second camera; a third lens associated with thethird camera; and an acceleration sensor.
 6. The mobile terminal ofclaim 1, wherein the sensor to detect rotation of the mobile terminal isan angular velocity sensor.
 7. The mobile terminal of claim 1, whereinthe plurality of settings include a first setting for switching betweenthe first camera and the second camera and a second setting forcontrolling a flash included in the mobile terminal.
 8. The mobileterminal of claim 1, wherein the display displays operation menusincluding: an option to change between a photographing mode and a movingimage mode; an option to select a focusing operation; and an option toselect a white balance operation.
 9. The mobile terminal of claim 1,wherein the mobile terminal is configured to detect the presence of aface of a user.
 10. The mobile terminal of claim 1, wherein the secondcamera generates second image information during the same time period asthe third camera generates third image information and the signalprocessor receives the second image information and the third imageinformation from the interface circuit and performs image processing onthe second image information and the third image information such thatthe display displays image data based on the image processing performedon both the second image information and the third image information.11. The mobile terminal of claim 1, wherein one or more of the secondcamera and third camera are used to generate an image with a super wideangle that is less than or equal to 360 degrees.
 12. The mobile terminalof claim 1, wherein the display displays first image information inreal-time based on a ratio between number of pixels of the first cameraand a number of pixels of the display.
 13. The mobile terminal of claim1, wherein the display displays second image information in real-timebased on a ratio between number of pixels of the second camera and anumber of pixels of the display.
 14. The mobile terminal of claim 1,wherein the mobile terminal detects whether an object different from aface is within a predetermined distance of the mobile terminal.
 15. Themobile terminal of claim 1, wherein the display displays a first imageincluded in the first image information after clipping a peripheryportion of the first image and displays a second image included in thesecond image information after clipping a periphery portion of thesecond image.
 16. A smartphone having a first side and a second sideopposite to the first side, comprising: a first camera included on thefirst side of the smartphone, the first camera configured to generatefirst image information including still image data and moving imagedata; a second camera included on the second side of the smartphone, thesecond camera configured to generate second image information includingstill image data and moving image data; a third camera included on thesecond side of the smartphone, the third camera configured to generatethird image information, wherein the third camera is disposed at apredetermined interval in a longitudinal direction from the secondcamera; an encoder encoding the still image data included in the firstimage information and second image information using a first type ofcompression scheme and further encoding the moving image data includedin the second image information using a second type of compressionscheme; a recording medium recording the encoded still image data andthe encoded moving image data; a wireless communication circuit forconnecting the smartphone to the Internet; a GPS signal receiver foracquiring position information of the smartphone; an interface circuitreceiving the first image information from the first camera and thesecond image information from the second camera; a proximity sensorgenerating proximity information; a sensor to detect rotation of thesmartphone; a touch panel; a display integrated with the touch panelincluding a first display region and a second display region differentfrom the first display region, the second display region displaying aplurality of settings corresponding to at least one or more of the firstcamera and the second camera; a signal processor which receives thefirst image information and the second image information via theinterface circuit and generates information to be displayed by thedisplay based on one or more of the first image information and thesecond image information, wherein the signal processer performs imagesignal processing on the first image information or the second imageinformation to perform white balance correction; a controller thatreceives the position information from the GPS signal receiver andcontrols at least the first camera, the second camera, the wirelesscommunication circuit, the display, and the signal processor, whereinthe plurality of settings include a setting button that is displayed inthe second display region and the touch panel detects a touch of aposition of the displayed setting button, wherein the display displays afocus setting region frame according to a touch detected by the touchpanel in the first display region, and the smartphone is configured tomove a display position of the focus setting region frame based on thedetection of an additional touch in the first display region, andwherein the second camera works in conjunction with the third camerasuch that the second camera generates second image information duringthe same time period as the third camera generates third imageinformation and the signal processor receives the second imageinformation and the third image information from the interface circuitand performs image processing on the second image information and thethird image information such that the display displays image data basedon the image processing performed on both the second image informationand the third image information.
 17. The smartphone of claim 16, whereinthe first type of compression scheme is JPEG, the second type ofcompression scheme is MPEG, and the recording medium records still imagedata included in the first image information or second image informationin a RAW format that has not been encoded by the encoder using the firsttype of compression scheme and the second type of compression scheme.18. The smartphone of claim 16, wherein: the encoder encodes image dataincluded in the third image information; the interface circuit receivesthe third image information from the third camera; the signal processorreceives the third image information from the third camera via theinterface circuit and generates information to be displayed by thedisplay based on the third image information; and the controllercontrols the third camera.
 19. A smartphone having a first side and asecond side opposite to the first side, comprising: a first cameraincluded on the first side of the smartphone, the first cameraconfigured to generate first image information including still imagedata and moving image data; a second camera included on the second sideof the smartphone, the second camera configured to generate second imageinformation including still image data and moving image data; a thirdcamera included on the second side of the smartphone, the third cameraconfigured to generate third image information, wherein the third camerais disposed at a predetermined interval in a longitudinal direction fromthe second camera; an encoder encoding the still image data included inthe first image information and second image information using a firsttype of compression scheme and further encoding the moving image dataincluded in the second image information using a second type ofcompression scheme; a recording medium recording the encoded still imagedata and the encoded moving image data; a wireless communication circuitfor connecting the smartphone to the Internet; a GPS signal receiver foracquiring position information of the smartphone; an interface circuitreceiving the first image information from the first camera and thesecond image information from the second camera; a proximity sensorgenerating proximity information; a sensor to detect rotation of thesmartphone; a touch panel; a display integrated with the touch panelincluding a first display region and a second display region differentfrom the first display region, the second display region displaying aplurality of settings corresponding to at least one or more of the firstcamera and the second camera, wherein the plurality of settings includea first setting for switching between the first camera and the secondcamera and a second setting for controlling a flash included in thesmartphone; a signal processor which receives the first imageinformation and the second image information via the interface circuitand generates information to be displayed by the display based on one ormore of the first image information and the second image information,wherein the signal processer performs image signal processing on thefirst image information or the second image information to perform whitebalance correction; a controller that receives the position informationfrom the GPS signal receiver and controls at least the first camera, thesecond camera, the wireless communication circuit, the display, and thesignal processor, wherein the plurality of settings include a settingbutton that is displayed in the second display region and the touchpanel detects a touch of a position of the displayed setting button,wherein the display displays a focus setting region frame according to atouch detected by the touch panel in the first display region, and thesmartphone is configured to move a display position of the focus settingregion frame based on the detection of an additional touch in the firstdisplay region, wherein the recording medium records still image dataincluded in the first image information or second image information in aformat that has not been encoded by the encoder using the first type ofcompression scheme and the second type of compression scheme, whereinthe second camera works in conjunction with the third camera such thatthe second camera generates second image information during the sametime period as the third camera generates third image information andthe signal processor receives the second image information and the thirdimage information from the interface circuit and performs imageprocessing on the second image information and the third imageinformation such that the display displays image data based on the imageprocessing performed on both the second image information and the thirdimage information, wherein the display displays operation menusincluding: an option to change between a photographing mode and a movingimage mode; an option to select a focusing operation; and an option toselect a white balance operation, wherein the smartphone is configuredto detect the presence of a face of a user, and wherein the displaydisplays first image information in real-time based on a ratio betweennumber of pixels of the first camera and a number of pixels of thedisplay.
 20. The smartphone of claim 19, wherein the first type ofcompression scheme is JPEG, the second type of compression scheme isMPEG, and the recording medium records still image data included in thefirst image information or second image information in a RAW format thathas not been encoded by the encoder using the first type of compressionscheme and the second type of compression scheme.